When your trusted hardware starts producing pages with vertical or horizontal lines that don't form part of the content you printed, start your troubleshooting with ...
horizontal-lines-when-printing-hp-laserjet
Mar 5, 2021 — How can I fix my laser printer's streaking issue? ... Streaking is usually caused by a worn out drum unit or spent toner cartridge. Drum units are a ... 939c2ea5af
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